SIP 100 Trying vs 484 Address Incomplete
SIP 100 (Trying) is a 1xx Provisional response, while 484 (Address Incomplete) is a 4xx Client Failure response. 100 indicates that the request has been received by the next-hop server and an unspecified action is being taken to process it. The UAC should expect additional responses. In contrast, 484 means that the Request-URI was incomplete. The server needs additional digits or information to route the call.
विवरण
The request has been received by the next-hop server and an unspecified action is being taken to process it. The UAC should expect additional responses.
जब आप इसे देखें
Immediately after sending an INVITE. The proxy has received the call and is searching for the callee. This is the SIP equivalent of a dial tone.
कैसे ठीक करें
No fix needed — this is normal call setup behavior. If stuck on 100 Trying for too long, check network connectivity and proxy configuration.
विवरण
The Request-URI was incomplete. The server needs additional digits or information to route the call.
जब आप इसे देखें
When dialing a partial phone number that the server cannot resolve. Common in PSTN gateway scenarios with overlap dialing.
कैसे ठीक करें
Provide the complete destination address. Add missing digits or domain information to the Request-URI.
मुख्य अंतर
100 is a 1xx Provisional response, while 484 is a 4xx Client Failure response.
SIP 100: The request has been received by the next-hop server and an unspecified action is being taken to process it. The UAC should expect additional responses.
SIP 484: The Request-URI was incomplete. The server needs additional digits or information to route the call.
You encounter 100 when immediately after sending an INVITE. The proxy has received the call and is searching for the callee. This is the SIP equivalent of a dial tone.
You encounter 484 when when dialing a partial phone number that the server cannot resolve. Common in PSTN gateway scenarios with overlap dialing.
कब किसका उपयोग करें
For 100 (Trying): No fix needed — this is normal call setup behavior. If stuck on 100 Trying for too long, check network connectivity and proxy configuration. For 484 (Address Incomplete): Provide the complete destination address. Add missing digits or domain information to the Request-URI.